chore: minor fixes and formatting

repositories/categories.py

@@ -1,20 +1,17 @@
-from typing import Optional
-from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import aliased
 
 from db.models import Category
 
 
 class CategoriesRepository:
-    async def get_category_by_id(
-        self, session: AsyncSession, category_id: int
-    ) -> Optional[Category]:
+    async def get_category_by_id(self, session: AsyncSession, category_id: int) -> Category | None:
         stmt = select(Category).where(Category.id == category_id)
         return await session.scalar(stmt)
 
     async def get_categories_by_parent_id(
-        self, session: AsyncSession, parent_id: Optional[int] = None
+        self, session: AsyncSession, parent_id: int | None = None
     ) -> list[Category]:
         stmt = select(Category).where(Category.parent_id == parent_id)
         result = await session.scalars(stmt)
@@ -31,9 +28,7 @@ class CategoriesRepository:
         parent = aliased(Category)
 
         cte = cte.union_all(
-            select(parent.id, parent.parent_id, parent.name).join(
-                cte, cte.c.parent_id == parent.id
-            )
+            select(parent.id, parent.parent_id, parent.name).join(cte, cte.c.parent_id == parent.id)
         )
 
         stmt = select(cte)
@@ -45,7 +40,7 @@ class CategoriesRepository:
         return list(reversed(rows))
 
     async def add_category(
-        self, session: AsyncSession, *, name: str, parent_id: Optional[int]
+        self, session: AsyncSession, *, name: str, parent_id: int | None
     ) -> Category:
         category = Category(name=name, parent_id=parent_id)
 
@@ -54,9 +49,7 @@ class CategoriesRepository:
 
         return category
 
-    async def update_category_name(
-        self, session: AsyncSession, category_id: int, value: str
-    ):
+    async def update_category_name(self, session: AsyncSession, category_id: int, value: str):
         category = await self.get_category_by_id(session, category_id)
         category.name = value